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   <div id="projectname">Parola for Arduino<span id="projectnumber">&#160;3.7</span>
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   <div id="projectbrief">Text effects for LED Matrix modular hardware</div>
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<div><div class="header">
  <div class="headertitle"><div class="title">Revision History</div></div>
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<div class="contents">
<div class="textblock"><p>Jul 2023 - version 3.7.1</p><ul>
<li>added getIntensity() to Parola object</li>
</ul>
<p>Jun 2023 - version 3.7.0</p><ul>
<li>begin() returns bool status</li>
<li>fixed intensity initialisation of multi-zone displays at startup</li>
</ul>
<p>Nov 2022 - version 3.6.2</p><ul>
<li>Fixed uninitialised _intensity class variable</li>
</ul>
<p>May 2022 - version 3.6.1</p><ul>
<li>Fixed misspelled parameter</li>
</ul>
<p>May 2022 - version 3.6.0</p><ul>
<li>Added constructor with specified SPI interface</li>
<li>Accepted Pull request for user defined chars</li>
</ul>
<p>May 2021 - version 3.5.7</p><ul>
<li>Fixed issues with text occasionally remaining on edge of display for diagonal scroll effects</li>
</ul>
<p>Mar 2021 - version 3.5.6</p><ul>
<li>Added TG_Combo, TG_Coord and TG_Zones examples</li>
<li>Deleted Test_TG example</li>
<li>Fixed ENA_* no longer working (compiler changes)</li>
<li>Deleted revision history prior to v2.0.0</li>
</ul>
<p>Dec 2020 - version 3.5.5</p><ul>
<li>Fixed erratic zone scrolling behavior in introduced with changes to 3.5.3</li>
<li>Added README.md to examples folder</li>
</ul>
<p>Oct 2020 - version 3.5.4</p><ul>
<li>Fixed typo in HelloWorld example</li>
</ul>
<p>Oct 2020 - version 3.5.3</p><ul>
<li>Fixed behavior of SCROLL_UP, DOWN, UP_LEFT, UP_RIGHT, DOWN_LEFT, DOWN_RIGHT for inverted display</li>
</ul>
<p>Aug 2020 - version 3.5.2</p><ul>
<li>Fixed ambiguous overloading setSpeed(uint8_t zone, uint16_t spd) and setSpeed(uint16_t spdIn, uint16_t spdOut)</li>
</ul>
<p>Aug 2020 - version 3.5.1</p><ul>
<li>Fixed non-functional setIntensity()</li>
</ul>
<p>Aug 2020 - version 3.5.0</p><ul>
<li>setSpeed() now allows setting independent IN and OUT speed</li>
<li>Added getZone() method</li>
<li>Added Animation_2Speed example</li>
<li>Workaround for issue #56 (<a href="https://github.com/MajicDesigns/MD_Parola/issues/56">https://github.com/MajicDesigns/MD_Parola/issues/56</a>) built into library</li>
<li>Maintenance release for new (more picky) IDE compiler settings</li>
</ul>
<p>Aug 2020 - version 3.4.0</p><ul>
<li>Updated parts of documentation</li>
<li>Exposed getTextColumns() as public</li>
</ul>
<p>Oct 2019 - version 3.3.0</p><ul>
<li>Reverted back to dynamic zone allocation removed in v2.6.6. Tested 22 zones seems ok. STATIC_ZONES defined value will immediately switch back to static zones.</li>
</ul>
<p>Aug 2019 - version 3.2.0</p><ul>
<li>Changed to use 16 bit character code</li>
<li>Checked all examples for clean compile with current version</li>
</ul>
<p>Jun 2019 - version 3.1.1</p><ul>
<li>Use const char* parameter instead of char* parameter.</li>
<li>Some compiler warnings fixed.</li>
<li>Uninitialized variables fixed.</li>
</ul>
<p>Dec 2018 - version 3.1.0</p><ul>
<li>Fixed issues caused by inter char spacing fix in v3.0.2.</li>
</ul>
<p>Dec 2018 - version 3.0.2</p><ul>
<li>Fixed another compile error with ESP8266.</li>
<li>Added Double_Scoreboard example.</li>
<li>Stopped inter char spacing with zero length character</li>
</ul>
<p>Jul 2018 - version 3.0.1</p><ul>
<li>Added getFont() method.</li>
<li>Cleaned up double height examples relying on old USE_*_HW defines.</li>
</ul>
<p>Jun 2018 - version 3.0.0</p><ul>
<li>Minor corrections to previous version examples and keyword.txt.</li>
<li>Added help text on sprite animations and minor doc updates.</li>
<li>Added Sprites_Simple example.</li>
<li>Adapted for changes to the MD_MAX72XX library.</li>
</ul>
<p>Apr 2018 - version 2.7.4</p><ul>
<li>Fixed bug with ESP8266 compilation.</li>
</ul>
<p>Apr 2018 - version 2.7.3</p><ul>
<li>Reworked sprite effects to enable user sprites as more sustainable in long run.</li>
<li>Removed all built in sprites from previous version.</li>
<li>Added Sprites example.</li>
</ul>
<p>Apr 2018 - version 2.7.2</p><ul>
<li>Fixed bug with last text column persisting for PA_SCAN_HORIZ and PA_SCAN_HORIZX effect.</li>
<li>Added sprite based text effects</li>
</ul>
<p>Mar 2018 - version 2.7.1</p><ul>
<li>Adjusted Scrolling_Menu example for changes to MD_Menu library.</li>
<li>Added graphics methods to support text + graphics displays</li>
<li>Added text &amp; graphics example Test_TG</li>
</ul>
<p>Dec 2017 - version 2.6.6</p><ul>
<li>Created MAX_ZONES constant to allow static zones array. Interim measure until resolution of the errors (?) caused when dynamically allocating the _Z array.</li>
<li>Cleaned up most compiler warnings.</li>
<li>Reworked Parola_Test example</li>
</ul>
<p>Nov 2017 - version 2.6.5</p><ul>
<li>Fixed RANDOM effect locking issue</li>
<li>Added Parola_Bluetooth example</li>
<li>Added Double_Height_Russian example</li>
<li>Added Scrolling_Menu example</li>
<li>Added Scrolling_Vertical example</li>
<li>Added SCAN_HORIZX/SCAN_VERTX text effects</li>
<li>Fixed bug with WIPE, SCAN and GROW when using 1 module only</li>
<li>Removed hard coded internal font buffer size</li>
<li>Changed examples - replaced MD_KeySwitch with new MD_UISwitch library</li>
</ul>
<p>Apr 2017 - version 2.6.4</p><ul>
<li>Added Parola_UFT-8_Display example for double multi-byte character handling</li>
<li>Fixed bug: single blank column in SCROLL_LEFT with PA_LEFT</li>
<li>Changed Scrolling example to parametrize more options</li>
<li>Added RANDOM text effect</li>
</ul>
<p>Feb 2017 - version 2.6.3</p><ul>
<li>Full review of double height functionality, mods as required</li>
<li>Added Double_Height_Test example</li>
<li>Cleaned up some example files</li>
</ul>
<p>Jan 2017 - version 2.6.2</p><ul>
<li>Added shutdown() method to enable low power mode</li>
<li>Corrected alignment offset problems in low level functions</li>
</ul>
<p>Jan 2017 - version 2.6.1</p><ul>
<li>Added ESP8266 example</li>
<li>Corrected keywords.txt file and main header file</li>
<li>Cleaned up looping logic in Double_Height examples</li>
<li>Corrected bug when double height PA_SCROLL_RIGHT</li>
</ul>
<p>Dec 2016 - version 2.6</p><ul>
<li>Prefaced all Parola enumerated types with PA_ as some clash with other libraries</li>
<li>Edited main library core routines to allow scrolling in double height mode</li>
<li>Eliminated trailing char separator from displayed string</li>
<li>Adjusted some animations to allow for changes to core utility functions</li>
<li>Changed Double_Height_v2 example to allow for Generic and Parola modules</li>
<li>Fixed font definitions for font based examples</li>
<li>Added Arduino Library Print Class extension for easy printing</li>
</ul>
<p>Nov 2016 - version 2.5</p><ul>
<li>Added ambulance example</li>
<li>Updated branding to MD_ diamond</li>
<li>Added README.md file</li>
</ul>
<p>Jan 2016 - version 2.4</p><ul>
<li>Added dynamic zone example</li>
<li>Added synchZoneStart() method to allow zones start times to be synchronized</li>
<li>Added double height character example by Arek00</li>
<li>Modified all examples to conditionally include &lt;SPI.h&gt;</li>
<li>Added double height character example (v2) using Font file created by MD_MAX72xx font builder</li>
<li>Added double height clock example</li>
<li>Added HelloWorld example - simplest working code</li>
<li>Added FADE animation</li>
<li>Adjusted documentation structure</li>
<li>Added preprocessor defines ENA_* for granular selection of animations (memory saving)</li>
</ul>
<p>Aug 2015 - version 2.3</p><ul>
<li>Added set/getScrollSpacing() methods and associated Scrolling_Spacing example</li>
<li>Added set/getZoneEffect with FLIP_LR and FLIP_UD, with associated Zone_Mirror example</li>
<li>Added MESH animation</li>
<li>Fixed minor bugs and documentation</li>
</ul>
<p>April 2015 - version 2.2</p><ul>
<li>Added Scrolling_ML example</li>
<li>Added Zone_Mesg example</li>
<li>Overloaded displayClear() for single zone clear</li>
<li>Fixed bug in SLICE effect when text was too long for display</li>
</ul>
<p>February 2015 - version 2.1</p><ul>
<li>Fixed small animation problems with SLICE and SCAN_VERT</li>
<li>Fixed PROGMEM error compiling with IDE version 1.5.7</li>
</ul>
<p>March 2014 - version 2.0</p><ul>
<li>Mods to accommodate revised font handling in MD_MAX72xx library<ul>
<li>Users can now provide a user defined font PROGMEM data table</li>
<li>User code can provide individual character override for equivalent font character</li>
</ul>
</li>
<li>Additional animations<ul>
<li>SCAN_HORIZ, SCAN_VERT</li>
<li>GROW_UP, GROW_DOWN</li>
<li>SCROLL_UP_LEFT, SCROLL_UP_RIGHT, SCROLL_DOWN_LEFT, SCROLL_DOWN_RIGHT</li>
</ul>
</li>
<li>Implemented Zoned scrolling<ul>
<li>Multiple independent zoned scrolling areas in one display.</li>
<li>Each zone has all character attributes (font, alignment, speed, pause, etc).</li>
</ul>
</li>
<li>textEffect_t and textAlign_t taken out of the class definition. Requires legacy code mods.</li>
<li>Backward compatible with library version 1.x code. </li>
</ul>
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